1 files changed, 103 insertions, 0 deletions
diff --git a/nuttx/libc/string/lib_strtol.c b/nuttx/libc/string/lib_strtol.c
new file mode 100644
index 000000000..6ac0d6827
--- /dev/null
+++ b/nuttx/libc/string/lib_strtol.c
@@ -0,0 +1,103 @@
+/****************************************************************************
+ * libc/string/lib_strtol.c
+ *
+ *   Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "lib_internal.h"
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: strtol
+ *
+ * Description:
+ *   The  strtol() function  converts  the initial part of the string in
+ *   nptr to a long integer value according to the given base, which must be
+ *   between 2 and 36 inclusive, or be the special value 0.
+ *
+ * Warning: does not check for integer overflow!
+ *
+ ****************************************************************************/
+ 
+long strtol(const char *nptr, char **endptr, int base)
+{
+  unsigned long accum = 0;
+  bool negate = false;
+
+  if (nptr)
+    {
+      /* Skip leading spaces */
+
+      lib_skipspace(&nptr);
+
+      /* Check for leading + or - */
+
+      if (*nptr == '-')
+        {
+          negate = true;
+          nptr++;
+        }
+      else if (*nptr == '+')
+        {
+          nptr++;
+        }
+
+      /* Get the unsigned value */
+
+      accum = strtoul(nptr, endptr, base);
+
+      /* Correct the sign of the result */
+
+      if (negate)
+        {
+          return -(long)accum;
+        }
+    }
+  return (long)accum;
+}
+